import time
from datetime import datetime, timedelta

from flask import abort
from flask import current_app, jsonify
from flask import g
from flask import redirect
from flask import render_template
from flask import request
from flask import session
from flask import url_for

from info import constants, db
from info.models import User, News, Category
from info.modules.admin import admin_blu
from info.utlis.captcha.response_code import RET
from info.utlis.commond import user_login_data
from info.utlis.image_storage import storage


@admin_blu.route("/news_type",methods = ["POST","GET"])
def news_type():
    if request.method == "GET":
        try:
            categories = Category.query.all()
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/news_type.html', errmsg="查询数据错误")
        category_dict_li = []
        for category in categories:
            cate_dict = category.to_dict()
            category_dict_li.append(cate_dict)
        # 移除最新的分类
        category_dict_li.pop(0)
        data = {
            "categories": category_dict_li
        }
        # 传数据
        return render_template("admin/news_type.html", data =data)

    # 修改和编辑分类
    # 判断是否有分类id
    category_id = request.json.get("id")
    category_name = request.json.get("name")
    if not category_name:
        return jsonify(erron=RET.PARAMERR, errmsg="参数错误")

    if category_id:
        try:
            category = Category.query.get(category_id)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(erronn=RET.DBERR, errmsg="查询数据失败")

        if not category:
            return jsonify(erron=RET.NODATA, errmsg="未查询到分类信息")

        category.name = category_name
    else:
        # 如果没有分类id，则是添加分类
        category = Category()
        category.name = category_name
        db.session.add(category)

    try:
        db.session.commit()
    except Exception as e:
        current_app.logger.error(e)
        db.session.rollback()
        return jsonify(erron=RET.DBERR, errmsg="保存数据失败")
    return jsonify(erron=RET.OK, errmsg="保存数据成功")


@admin_blu.route("/news_edit_detail", methods=["POST","GET"])
def news_edit_detail():
    # 1.展示编辑界面
    if request.method == "GET":
        news_id = request.args.get("news_id")
        if not news_id:
            abort(404)
        try:
            news_id = int(news_id)
        except Exception as error:
            current_app.logger.error(error)
            return render_template("admin/news_edit_detail.html", errmsg = "参数错误")
        try:
            news = News.query.get(news_id)
        except Exception as error:
            current_app.logger.error(error)
            return render_template("admin/news_edit_detail.html", errmsg="参数错误")

        if not news:
            return render_template("admin/news_edit_detail.html", errmsg="未查询到数据")
            # 查询分类数据
        try:
            categories = Category.query.all()
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/news_edit_detail.html', errmsg="查询数据错误")

        category_dict_li = []
        for category in categories:
            # 取到分类的字典
            cate_dict = category.to_dict()
            # 判断当前遍历到的分类是否是当前新闻的分类，如果是，则添加is_selected为true
            if category.id == news.category_id:
                cate_dict["is_selected"] = True
            category_dict_li.append(cate_dict)

        # 移除最新的分类
        category_dict_li.pop(0)

        data = {
            "news": news.to_dict(),
            "categories": category_dict_li
        }

        return render_template("admin/news_edit_detail.html",data=data)

    # 2.取修改的表单数据并提交
    news_id = request.form.get("news_id")
    title = request.form.get("title")
    digest = request.form.get("digest")
    content = request.form.get("content")
    index_image = request.files.get("index_image")
    category_id = request.form.get("category_id")
    # 2.1 判断数据是否有值
    if not all([title, digest, content, category_id]):
        return jsonify(erron=RET.PARAMERR, errmsg="参数有误")
    news = None
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
    if not news:
        return jsonify(erron=RET.NODATA, errmsg="未查询到新闻数据")
    # 2.2 尝试读取图片
    if index_image:
        try:
            index_image = index_image.read()
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(erron=RET.PARAMERR, errmsg="参数有误")
        # 2.3 将标题图片上传到七牛
        try:
            key = storage(index_image)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(erron=RET.THIRDERR, errmsg="上传图片错误")

        news.index_image_url = constants.QINIU_DOMIN_PREFIX + key

    # 2.4 设置相关数据
    news.title = title
    news.digest = digest
    news.content = content
    news.category_id = category_id
    # 只有添加对象时，才手动commit,配置里面设置了自动提交
    # 2.5 返回结果
    return jsonify(erron=RET.OK, errmsg="编辑成功")


@admin_blu.route('/news_edit')
def news_edit():
    """返回待审核新闻列表"""
    page = request.args.get("p", 1)
    keywords = request.args.get("keywords", "")
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1
    filters = [News.status == 0]
    # 如果有关键词
    if keywords:
        # 添加关键词的检索选项
        filters.append(News.title.contains(keywords))
    # 查询
    try:
        paginate = News.query.filter(*filters).order_by(News.create_time.desc()).paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)
        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as error:
        current_app.logger.error(error)

    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_basic_dict())
    data = {"total_page": total_page, "current_page": current_page, "news_list": news_dict_list}
    return render_template("admin/news_edit.html", data=data)


@admin_blu.route("/news_reviews_action",methods=["POST","GET"])
def news_reviews():
    # 1.接收参数
    data_dict = request.json
    news_id = data_dict.get("news_id")
    action = data_dict.get("action")
    # 2.校验参数
    if not all([news_id, action]):
        return jsonify(erron = RET.PARAMERR, errmsg = "参数错误")
    if action not in ("accept", "reject"):
        return jsonify(erron=RET.PARAMERR, errmsg="参数错误")
    # 3.查询参数
    try:
        new = News.query.get(news_id)
    except Exception as error:
        current_app.logger.error(error)
        return jsonify(erron=RET.DATAERR, errmsg="查询失败")
    # 4.校验查询结果
    if not new:
        return jsonify(erron=RET.DATAEXIST, errmsg="数据不存在")
    if action == "accept":
        new.status = 0
    else:
        ret = data_dict("reason")
        if not ret:
            return jsonify(erron=RET.PARAMERR, errmsg="参数错误")
        new.reason = ret
        new.status = -1

    return jsonify(erron=RET.OK, errmsg="OK")


@admin_blu.route('/news_review_detail/<int:news_id>')
def news_review_detail(news_id):
    """新闻审核"""
    # 通过id查询新闻
    news = None
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)

    if not news:
        return render_template('admin/news_review_detail.html', data={"errmsg": "未查询到此新闻"})

    # 返回数据
    data = {"news": news.to_dict()}
    return render_template('admin/news_review_detail.html', data=data)


@admin_blu.route('/news_review')
def news_review():
    """返回待审核新闻列表"""
    page = request.args.get("p", 1)
    keywords = request.args.get("keywords", "")
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1
    filters = [News.status != 0]
    # 如果有关键词
    if keywords:
        # 添加关键词的检索选项
        filters.append(News.title.contains(keywords))
    # 查询
    try:
        paginate = News.query.filter(*filters).order_by(News.create_time.desc()).paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)
        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as error:
        current_app.logger.error(error)

    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_review_dict())
    data = {"total_page": total_page, "current_page": current_page, "news_list": news_dict_list}
    return render_template("admin/news_review.html", data=data)


@admin_blu.route("/user_list")
def user_list():
    page = request.args.get("p", 1)
    try:
        page = int(page)
    except Exception as error:
        current_app.logger.error(error)
        page = 1
    # 查询总页数
    users = []
    total_page = 1
    current_page = 1

    # 查询数据
    try:
        paginate = User.query.filter(User.is_admin != True).order_by(User.last_login.desc()).paginate(page, constants.ADMIN_USER_PAGE_MAX_COUNT,False )
        users = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as error:
        current_app.logger.error(error)
    users_dict_li = []
    for user in users:
        users_dict_li.append(user.to_admin_dict())
    data = {"users":users_dict_li,
            "current_page":current_page,
            "total_page":total_page}
    return render_template("admin/user_list.html", data = data)


@admin_blu.route("/user_count")
def user_count():
    # 总用户
    total_count = 0
    try:
        total_count = User.query.filter(User.is_admin != True).count()
    except Exception as error:
        current_app.logger.error(error)
    # 月新增用户
    now = time.localtime()
    mon_begin = "%d-%02d-01" %(now.tm_year, now.tm_mon)
    mon_begin_date = datetime.strptime(mon_begin, "%Y-%m-%d")
    mon_count = 0
    try:
        mon_count = User.query.filter(User.create_time >= mon_begin_date,User.is_admin!=True).count()
    except Exception as error:
        current_app.logger.error(error)
    # 日用户
    day_count = 0
    now = time.localtime()
    day_begin = "%d-%02d-%02d" % (now.tm_year, now.tm_mon, now.tm_mday)
    day_begin_date = datetime.strptime(day_begin, '%Y-%m-%d')
    try:
        day_count = User.query.filter(User.create_time >= day_begin_date, User.is_admin != True).count()
    except Exception as error:
        current_app.logger.error(error)

    # 活跃功能
    active_date = []
    active_count = []
    today_date_str = ('%d-%02d-%02d' % (now.tm_year, now.tm_mon, now.tm_mday))
    today_date = datetime.strptime(today_date_str, "%Y-%m-%d")
    for i in range(0, 31):
        begin_data = today_date - timedelta(days = i)
        end_data = today_date - timedelta(days = (i-1))
        active_date.append(begin_data.strftime('%Y-%m-%d'))
        try:
            day_count = User.query.filter(User.last_login >= begin_data, User.last_login <= end_data,User.is_admin != True).count()
        except Exception as error:
            current_app.logger.error(error)
        active_count.append(day_count)

    active_count.reverse()
    active_date.reverse()
    data = {"total_count":total_count,
            "mon_count": mon_count,
            "day_count": day_count,
            "active_count":active_count,
            "active_date":active_date}
    return render_template("admin/user_count.html", data = data)


@admin_blu.route("/login",methods =["POST", "GET"])
def admin_login():
    if request.method == "GET":
        # 去 session 中取指定的值
        user_id = session.get("user_id", None)
        is_admin = session.get("is_admin", False)
        # 如果用户id存在，并且是管理员，那么直接跳转管理后台主页
        if user_id and is_admin:
            return redirect(url_for("admin.index"))
        return render_template('admin/login.html')

    # 取到登录的参数
    username = request.form.get("username")
    password = request.form.get("password")
    if not all([username, password]):
        return render_template('admin/login.html', errmsg="参数不足")

    try:
        user = User.query.filter(User.mobile == username).first()
    except Exception as e:
        current_app.logger.error(e)
        return render_template('admin/login.html', errmsg="数据查询失败")

    if not user:
        return render_template('admin/login.html', errmsg="用户不存在")

    if not user.check_passowrd(password):
        return render_template('admin/login.html', errmsg="密码错误")

    if not user.is_admin:
        return render_template('admin/login.html', errmsg="用户权限错误")

    session["user_id"] = user.id
    session["nick_name"] = user.nick_name
    session["mobile"] = user.mobile
    session["is_admin"] = user.is_admin
    return redirect(url_for("admin.index"))


@admin_blu.route("/index", methods = ["POST","GET"])
@user_login_data
def index():
    user = g.user
    data = {"user": user.to_dict()}
    return render_template("admin/index.html", data=data)